1#!/usr/bin/env python3
2
3# Copyright 2017 gRPC authors.
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17import os
18import re
19import sys
20
21os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../../..'))
22
23errors = 0
24tracers = []
25pattern = re.compile("GRPC_TRACER_INITIALIZER\((true|false), \"(.*)\"\)")
26for root, dirs, files in os.walk('src/core'):
27    for filename in files:
28        path = os.path.join(root, filename)
29        if os.path.splitext(path)[1] != '.c':
30            continue
31        with open(path) as f:
32            text = f.read()
33        for o in pattern.findall(text):
34            tracers.append(o[1])
35
36with open('doc/environment_variables.md') as f:
37    text = f.read()
38
39for t in tracers:
40    if t not in text:
41        print((
42            "ERROR: tracer \"%s\" is not mentioned in doc/environment_variables.md"
43            % t))
44        errors += 1
45
46assert errors == 0
47